Nozzle and cloth belonging to and used in filter-presses.



J. NEWTON. NOZZLE AND CLOTH BELONGING TO AND USED IN FILTER PRESSES.

n APPLICATION FILED JUNE 30, 1913. 1,083,46 Patented Jan.6,1914.

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COLUMBIA PLANOGRAPH (20., WASHINHTON. D. c,

J. NEWTON.

APPLICATION FILED JUNE 30, 1913.

Patented Jan. 6, 1914:.

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NOZZLE AND CLOTH BELONGING TO AND USED IN FILTER PRESSBS.

JOHN NEWTON, or LONGPOR'I', STOKE UPON-TRENT, ENGLAND.

NOZZLE AND CLOTH BELONGING TO AND USED IN FILTER-PRESSES.

Specification of Letters Patent.

Patented Jan. 6,1914.

Application filed June 30, 1913. Serial No. 776,542.

To all whom it may concern Be it known that I, JoI-IN Unw'ioiv, subjectof the King of Great Britain and Ireland, and resident of Longport,Stoke-upon- Trent, in the county of Stafford, England. engineer, haveinvented certain new and useful Improvements in Nozzles and ClothsBelonging to and Used in Fllter-Fresses, of which the following is aspecification.

My invention relates to improvements in or iii connection with nozzlesand cloths employed in filter pressesand particularly to such as areemployed for filtering potters slip, the object being to provide an 1mproved nozzle for each tap having a rigid tubular extension of reduceddiameter below the usual coupling joint of the tap; the combination withsuch nozzle of a filter bag provided internally with a flexible tubewith or without a conical entrance nipple and an improved filter taphaving a rigid tubular extension of reduced diameter secured to the tapbody or a tubular extension of a reduced diameter secured to the tapbody by a spherical end or by an end with a flexible disk so as topermit of universal movement about the joint connection.

My invention will be fully described with reference to the accompanyingdrawings in which Figure 1 is an elevation, partly in section, of anozzle and tap, Fig. 2 sectional elevation of a flexible tube connectedto the filter cloth, Fig. 3 elevation of nozzle only, Fig. 4 elevationof a tap having a tubular projection secured to the tap, Figs. 5 and 6side elevations partly in section, showing a spherical bearing for thetubular projection and flexible connection respectively, Fig. 7 detachedview showing a curved tubular projection and Fig. 8 elevation, partly insection, showing a flexible tube, tubular projection and ferrule.

In accordance with my invention and referring particularly to Figs. 1 to3 a represents the ordinary plug tap body fitted with the usual unioncoupling I) having projections 0 engaged by inclined lugs (Z formed onthe usual nozzle 6. My invention consists in forming the latter with atubular extension f'of reduced diameter at its lower end permanentlyattached thereto, such extension being adapted to pass tightly through aflexible tube 9 secured to the upper end of the filter cloth or bag 72.,such flexible tube also forming a feature of my tension and the tap.

lnvention, A liquid-tight joint is made between the parts referred to bythe internal pressure exerted by the slip within the bag. The usualpatch 2' is secured to the bag it near the flexible tube 9 to strengthenit.

So far as the provision of the tubular extension and flexible tube areconcerned the arrangement described was quite satisfactory, butdisadvantages exist in connection with the coupling of the nozzle 0 withthe tap a, as hitherto, that is to say, that when the press is full thetap has to be uncoupled from the nozzle by unscrewing a lock nut whichat each operation causes a loss of slip as the slip held in the body ofthe tap and below the plug but above the top of the nozzle escapes on tothe top of the press and is to a great extent wasted. Besides this, thetime required to couple and uncouple the tap from the nozzle at eachoperation is considerable. A further feature of my inventlon, therefore,consists in securing the reduced tubular extension f permanently to thelower end of the tap body a near to its plug portion or I detachablysecure it thereto as in Fig. 4 by providing its upper end with ahexagonal head j, flange or the like having a screwed extension 7.;fitting in or upon a corresponding screwed portion at the lower end ofthe tap, a, the head or the flange enabling a tight joint to be madewith the tap, with or without the use of a packing medium. Such a formof connection is rigid but as the stand pipe to which the taps areconnected is usually hinged to the mainslip supply pipe atone end I mayprovide a flexible, though liquid-tight joint between the upper end ofthe reduced tubular ex- Thus the end of the pipe may be spherical as atm, Fig. 5, and fit within a correspondingly-shaped nipple or union ascrewed to the lower end of the tap, such end being also shaped toconform to the spherical end of the tube. Or, again, the upper end ofthe tube may be suitably connected to a flexible disk 0, as in Fig. 6secured by a union coupling 7) to the end of the tap. Othermodifications having the same object in view may be devised, in allcases with the object of allowing the tubular extension to movefl'exibly as shown by broken lines in Figs. 5 and 6 when it is beingpassed into the flexible tube 9 of the filter cloth or bag it. To assistfurther in this direction I may employ in connection with the cloth orbag a nipple as in Fig.

8 located at the upper end of the flexible tube 9, within the bag, suchnipple being secured to the cloth and provided with an outer flange rforming an easy entrance for the tubular extension f. The flexible tube9 surrounds the smaller end of the nipple g. The tubular extension f maybe straight or may be curved as in Fig. 7 so as to enter the nipple orflexible tube 9 more easily.

With the arrangements described the loss of slip is almost entirelyprevented, and the time in attaching and detaching the tap from thenozzle saved.

The foregoing arrangements may be employed in connection with filtercloths or bags h provided with loops 2 passing over fixed pegs 3 on thefilter frames to hold them in position while the tubular extensions arebeing passed into the bag.

What I claim as my invention and desire to secure by Letters Patentis 1. In a clay-press attachment, the combination, with a discharge pipeprovided with an outlet valve, of a filter bag, and a tube of flexiblematerial secured to the top of the bag and depending within it, saiddischarge pipe being slidable in the said tube and fitting closely init.

2. In a clay-press attachment, the combination, with a discharge pipeprovided with an outlet valve, of a filter bag a tube of flexiblematerial secured to the top of the bag and depending within it, saiddischarge pipe being slidable in the said tube and fitting closely init, and a flaring entrancepiece for the discharge pipe, saidentrancepiece being secured in the top of the filter bag and in theupper endportion of the flexible tube.

In testimony whereof I have hereunto set my hand in the presence of twowitnesses.

JOSEPH BENTON, PATTIE PLANT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

